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The Vault

Prototype Dieckmann P66 Pistol at RIA

The P66 was a prototype .22LR semiauto pistol designed by a German immigrant to the United States by the name of Rolf Dieckmann. It never went into production, but had a number of interesting features, including a removable firing mechanism and a combination extractor and firing pin. In addition to Dieckmann pistol number X3, this [...]

Chinese Mystery Pistol at RIA

Many unique and interesting pistols were made in China in the 1920s and 1930s, and this pistol is a good example of them. It is not a copy of any specific Western handgun, although mechanically it works like a Mauser 1914 pocket pistol. It is chambered for .32ACP (the other common caliber for these handguns [...]

2.7mm Kolibri Semiauto at RIA

Today’s item at the September Rock Island auction is an example of the smallest centerfire pistol ever made – a 2.7mm Kolibri semiauto. About a thousand of these were made between 1910 and 1914, firing a 3-grain projectile at about 650 fps (for a total of 3 ftlb of muzzle energy). It may be insanely [...]

Handmade Auto-Revolver at RIA

This very odd one-off pistol first appeared in a 1958 Golden State Arms catalog, with no description of its history or mechanical design. I have often seen it referred to as an automatic revolver, but this is a misconception – what appears to be a cylinder is actually a rotary magazine, akin to a Ruger [...]

Krnka 1895 Semiauto Pistol at RIA

This prototype 1895 Krnka automatic pistol is another of the items up for sale at the upcoming Rock Island Premier Auction. This pistol, serial number 7, was the first in the developmental line that led to the 1907 Roth-Steyr cavalry pistol.

Folding 1911 Shoulder Stock

Colt 1911 with unusual folding wire shoulder stock

From Tom Laemlein:

Colt 1911 with unusual folding wire shoulder stock (click to enlarge)

A few years back I found these photos of a Marine Corps modification of the standard M1911 .45 caliber pistol. Unfortunately there was no accompanying documentation. A unique folding extension stock—it would interesting to know if any of [...]

Thumb-Safety Glock

(photo and text by Miles Vining)

Trials Glock with thumb safety (photo by Miles Vining, courtesy UK National Firearms Centre, Leeds)

One of the more revolutionary and innovative features of the Glock series of handguns is in their signature slogan “GLOCK Safe Action”. This is based on the fact that although [...]

Slow Motion: Frommer Stop

This week’s slow motion gun is the Frommer Stop, put into production in 1912. The Hungarian designer Rudolf Frommer was responsible for a series of long-recoil pistols, of which the Stop was the last and best. It is chambered for 7.65mm Frommer, which is identical in size to the .32 ACP but loaded slightly hotter. [...]

Mauser 1912/14 Automatic Pistol (Video)

The Mauser 1912/14 automatic pistol was the final stage of a dead-end development track for a military sidearm in 9mm Parabellum made by Mauser. The program began as a plain blowback pistol in 1909, which did not work effectively, and was replaced by a series of different locked or semilocked systems culminating in this, the [...]

Slow Motion: Colt All American 2000

The All-American 2000 was Colt’s attempt to compete with Glock for the military and police service pistol market. It had a polymer frame (except a few early ones with aluminum frames), a double-action-only striker firing system, double-stack magazines, and used a rotating barrel to lock. The design was originally the brainchild of C. Reed Knight [...]